Leader Retains Much Support But Faces Economic, Foreign Policy Challenges

TOKYO—After a remarkably successful first year, Prime Minister Shinzo Abe's government has arrived, as one aide says, "at its greatest stress point."

Japanese economic data have softened, while stocks are slumping. Anti-Japanese rhetoric from neighbors has hardened, raising concerns among Tokyo's closest friends in Washington. Controversial comments by aides and friends of Mr. Abe have dominated recent coverage.